.carousel{
  overflow: hidden;
  position: relative;
      height: 300px;
  [nz-carousel-content] {
    text-align: center;
    height: 300px;
    line-height: 300px;
    background: #364d79;
    color: #fff;
    overflow: hidden;
  }

  h3 {
    color: #fff;
  }
  span{
    position: absolute;
    top: 50%;
    transform:translateY(-50%);
    width:40px;
    height:40px;
    background: #fff;
    border-radius: 50%;
    &:hover{
      background: #001529;
      b{
        border-color:#fff;
      }
    }
    b{
      width:22px;
      height:22px;
      display: block;
      transform: rotate(45deg);
    }
  }
  .pre{
    left:0;
    b{
      border-left:2px solid black;
      border-bottom:2px solid black;
      margin: 9px 9px 9px 14px;
    }
  }
  .next{
    right: 0;
        b{
      border-top:2px solid black;
      border-right:2px solid black;
      margin: 9px 9px 9px 4px;
    }
  }
  img{
    width:100%;
    height:100%;
  }
}